Combination pinning and riveting machine.



I. BARNETT.

COMBINATION PINNING AND RWETING MACHINE.

APPLICATION men JULY n. 1916.

1,235,873. Patented Aug. 7, 1917.

WITNESSES: I i INVENTOR A tlomeys I. BARNETT.

COMBINATION PINNING AND RIVETING MACHINE.

APPLICATION FILED IULY II. 1916,

Patented Aug. 7, 1917.

3 SHEETS- SHEET 2. I a a a a INVENTOR A ll omeys l.- BARNETT. COMBINATION PINNING AND RIVETING MACHINE. APPLICATION FILED JULY 11. 1916.

1,235,873; Patented 4,1917. HEET a.

3 SHE 1732. I E FI 1N VEN TOR .14. 1506/6 jar/Wa B a y M' N ltorneys PATENT @FFKQE.

ISAAC BARNETT, or NEVT YORK, N. Y.

COMBINATION IINNING AND RIVETING MACHINE.

Application filed July 11,

To all whom it may concern Be it known that I, ISAAC BARNETT, a citizen of the United States, residing in the city of New York, borough of Manhattan, county and State of New York, have invented a certain new and useful Combination Pinning and Riveting Machine, of which the following is a specification.

This invention is a pinning and riveting machine and is adapted, more particularly, for the riveting together of the parts of pocketbook and handbag frames for the purpose of securing the leather or fabric body of the pocketbook to the metallic frame thereof.

One of the objects of the invention is to provide a machine which will automatically feed the rivets to a riveting point, place them. in a position for insertion into previously formed holes in the pocketbook frame, out off the rivets to the desired length, and subsequently head them over to secure the part of the frame together, with the wall of the pocketbook therebetween.

A further object of the invention is the provision of mechanism which will carry out the above enumerated operations in a continuous, consecutive manner so that the machine will operate with efficiency and expedition, whereby the operations of inserting a rivet, cutting it off, and heading it over may be accomplished rapidly, and no appreciable period of dwell need occur between successive riveting operations.

Speaking generally, the invention embodies mechanism for feeding rivets, one at a time, to a riveting point, mechanism for holding the rivet in operative position at the riveting point, means for holding the rivet in riveting position and in place in the article operated upon, means for cutting off the rivet to the desired length, and means for heading over the rivet.

In the preferred practical embodiment of the invention, the various mechanisms are operable from a common prime mover and are connected together so that they operate in logical sequence for the accomplishment of the work to be done.

Features of the invention, other than those saecified, will be apparent from the hereinafter detailed description taken in conjunction with the accompanying drawings.

Specification of Letters Patent.

1916. Serial No. 108,584.

In the accompanying drawings I have illustrated one practical embodiment of the nvention, but the construction shown therein is to be understood as illustrative, only, and not as defining the limits of the inven tion.

Figure 1 is a front elevation of a machine embodying the present invention, portions of the machine being shown in section in the interest of clearness.

Fig. 2 is .a back elevation of the machine shown in Fig. 1.

Fig. 3 is a section taken on line 3-3 of Fig. 1.

Fig. 4 is a section taken on line 4-4 of Fig. 3, certain parts being omitted in the interest of clearness.

Fig. 5 is a section taken on line 55 of Fig. 1.

Fig. 6 is a detail side elevation of a certain cam member which is preferably employed for controlling the rivet cut-off mechanism.

Fig. 7 is a section on line 77 of Fig. 6, showing the contour of said cam member.

Fig. 8 is a section taken on line 8-8 of Fig. 1, showing the mechanism, including a delivery gate, for delivering the rivets, one

. by one, to the riveting point.

Fig. 9 is a detail elevation, partly in section, of the delivery gate shown in Fig. 8. The delivery gate of Fig. 9 is shown as viewed from the face thereof adjacent the center of a hopper or magazine adapted to contain the rivets.

Fig. 10 is a view similar to that of Fig.

' 9, but viewing the gate from the opposite side, and

Fig. 11 is an underneath plan view of said gate.

Referring to the drawings, A designates a frame or standard upon which the operating parts of the machine are mounted. Standard A is in the form of an upstanding wall or web provided at its lower end with a suitable base A of suflicient width to furnish a stable mounting for the machine when the same is secured to a fixed support.

Secured to, or formed integral with, the front face of standard A, is a rivet-holding block B. This block is provided with a horizontal, cut-away portion Z), in which are pivotally secured two complementary clamping jaws C, pivoted at 0, as clearly shown in Figs. 1 and 3. A pair of leaf springs c are secured as at 0 and their free ends bear against the exterior faces of the two clamping jaws O for the purpose of normally forcing them together. The clamping jaws, as shown in Fig. 3, are cut away back of their noses, to provide a space in which the rivets w are adapted to be deposited, one at a time, through a passage d (see Fig. 4) leading from a hopper or magazine D, whence they are delivered, one at a time, by means hereinafter described, and gravitate into the position shown in dotted lines in Fig. 4.

With rivet-holding block B cooperates means for positioning rivets, deposited as described, so that they may be brought into cooperative relation with the work to be done, and this means is shown in the drawings as embodied in a plunger E, slidably mounted for longitudinal movement in the rivetholding block, extending rearwardly l beyond the same and carrying near its free end an operating head F provided with two fixed collars 7. The plunger E is threaded through the operating head F, a lock nut f being provided to preclude the parts from working loose. A spring G is coiled around the plunger intermediate operating head F and rivet-holding block B, and serves to normally retract the plunger, 2'. 6., to force the operating head away from the rivetholding block.

Opposed to the operations of spring G is a mechanically controlled bell-crank lever V H, the upper end of which is bifurcated to straddle operating head F and lie between the fixed collars f. Bell-crank H is pivoted to frame A, as at h, and is also provided with a roller it adapted to ride on the face of a cam I fixed on a stub shaft 2' and suitably journaled in frame A. v

It will be noted from Fig. 1 that cam I has three phases, an intermediate phase 2",

a low phase i and a high phase i When the cam is in the position shown in Fig. 1,

of the cam, the plunger is in the intermediate position shown in full lines in Fig. 3.

Then the cam moves in a clockwise directionto bring the roller upon the low phase 71 'of the cam, spring G retracts plunger E into the dotted line position shown in Fig. 3,

wherein its free end is farther away from the noses of clamping jaws C than was initially the case.

However, when the cam still farther advances to bring the high 'phase 2' under roller h, bell-crank H is oscillated to such extent as to force the plunger forwardly between the noses of clamping jaws C, so that it extends between and beyond the ends of said clamping jaws, as shown in dash lines in Fig. 3

It will thus appear that, if a rivet a? has cam in a counter-clockwise direction as will be hereinafter described, the finishing counter-clockwise movement of the cam will cause the intermediate phase 2" to operate the plunger to the full line position of Fig. 3, for the purpose of forcing the rivet a: forward into the full line position. of. Fi s. 3 and 4. The end of the rivet, in such position, will protrude beyond the noses of clamping jaws C. When the cam is subsequently moved in a clockwise direction to bring the high phase i of the cam under roller h, a forward impulse is imparted to plunger E, which carries the rivet through and beyond the clamping jaws and frees it from said. jaws, for reasons hereinafter manifest. 7

Movement may be imparted to stub shaft 2', on which cam I is fixed, in any suitable manner, but, in the preferred form of the invention, said shaft 2' has affixed thereto an arm j, to the free end of which is pivoted direction, will satisfactorily actuate .the

mechanism of this invention.

In the foregoing descriptlon, the manner -in which rivets, fed to the rivet-holding block, are automatically moved to a riveting position, has been specifically described, and mechanism will now be set forth whereby excess length of rivet may be cut off and the remaining portion of the rivet subsequently headed over. It will be understood that, in operating the machine of this in vention, the rivet is brought, in the manner described, to assume the full line position of Figs. 1, 3 and 4. The parts of the pocketbook which it is desired to rivet together are next manually assembled by the operator so that rivet-holes subsequently formed therein are brought into registration, with the fabric or leather bag portion intermediate the parts of the frame. After the operator has manually assembled these parts as described, he manipulates the same into such position in the machine that the protruding in section in Fig. 2 in the position in which 'portion of the rivet is passed through the rivet-holes of the frame portions y and bag portion y, which parts are clearly shown they are placed by the operator. After the parts have thus been positioned, the cutting ofi of excess rivet length and the headingover operation are successively carried out in the manner next to be described.

Fixed on stub shaft 2', at the backside of standard A, is a second arm 3, to the free end of which is pivoted one end of a link the upper end of which is pivoted to one arm of a heading lever K pivoted on a post 70, fixed in horizontal position on the standard. 'When oscillating movement is imparted to stub shaft 2', this movement is transmitted through arm j and link j to heading lever K, for the purpose of oscillating the same.

Also mounted for pivotal movement on post it is a hanger L provided with a foot 1', on which is mounted a pair of cooperating cutter jaws M, as shown in Figs. 1, 2 and 5. Hanger L is normally impelled in a direc tion to bring the cutter jaws into engagement with the rivet by means of a spring M, but the tension of spring M is opposed by a finger Z which is mounted on hanger L and extends upwardly and over the edge of heading lever K. Accordingly, while the spring serves to normally advance hanger L, it cannot move unless lever K is moved. To this extent, therefore, hanger L is under the control of lever K.

Mounted on foot Z of hanger L, and se cured thereon by a pivot pin m, are the two cutter jaws M, the sharpened edges m of which are normally forced away from one another by a coiled spring m secured to the other ends of the arms of said jaws. Threaded through each arm of said cutter jaws, and at the other side of pivot pin 'm. from the sharpened edges m of said jaws, are two set screws m each of which is provided with a lock nut m The inner ends of set screws m are preferably rounded over and cooperate with the opposite faces of a cam member N, which is secured at the lower forward end of heading lever K, as clearly shown in Figs. 1 and 5. Spring m forces the power arms of the cutter jaws together, and thereby maintains the set screws at all times in engagement with the opposite faces of said cam member.

Cam member N is shown in detail in Figs. 6 and 7. and in dotted lines in Fig. 5. Said member is of decreased thickness at its forward end a and at its rear end a, and of greater thickness between its ends, as at 72. It will be manifest, therefore, that, when set screws m are near the opposite ends of said cam member, spring m will be allowed to force the power arms of the cutter jaws together and open the jaws. However, when the wider portion a is brought between set screws m the power arms of the cutter jaws are forced apart against the tension of spring m to close said jaws.

Mounted on the free, forward end of heading lever K, and immediately above cam member N, is an elongated rod 0 adapted for longitudinal adjustment relative to lever K by means of two am-nuts 0. Rod 0 is tapered at its forward end, as at 0, and is so positioned on lever K that, when the forward end of said lever is forced forward for the riveting operation, rod 0 will be brought into substantial alincment with a rivet 00 held by clamping jaws C. The function of rod 0, with its tapered end 0, is to serve as a set for upsetting or headingover the rivets, as will be hereinafter described.

Assuming that a rivet tioned in clamping jaws erator has positioned the pocketbook parts :1 and. y on the rivet, as shown in Fig. 2, the next operation performed by the machine is to cut off the rivet and subsequently head it over. The normally retracted position of the parts, for bringing about these results, is as shown in Fig. 2. Link J is now depressed by suitable treadle mechanism to oscillate stub shaft i in such direction as to lift link This lifting movement of link j will serve to oscillate heading lever K toward the riveting point. It will be noted, however, from an inspection of Figs. 1, 2 and 5, that pivoted hanger L moves under the impulse of its spring M in advance of lever K, and, as these parts move forward as described, the set screws which govern the cutter jaws are in engagement with cam member N near its forward end a, and, accordingly, said clamping jaws are open.

The association of the parts is such, and cam I and arm j are so mounted on stub shaft 11, that, as said shaft is rotated to bring the sharpened ends of cutter aws M into position to straddle the rivet 00 and press against the adjacent frame member y of the pocketbook, cam I is shifted to the position wherein the high phase 2' of the cam engages with roller h at just about the time when the cutter jaws engage with the pocketbook frame. The result of this operation is that plunger E is forced forward between clamping jaws C as hereinbefore described, thereby forcing the rivet through and beyond the clamping jaws and bringing its head against the adjacent face of the pocketbook frame. Moreover, the plunger follows the rivet to the position described so as to form a sort of anvil which, cooperating with the ends of the cutter jaws, tightly compresses the parts to be riveted. The high phase of the cam remains under roller h during a further rotation of stub shaft 71, but said stub shaft further pivotally moves the heading lever K to bring its forward end closer to the riveting point. This results in forcing cam member N forwardly between set screws m of the cutter jaws so has been posi- C, and the opthat, as the widest portion 71. passes between said set screws, the sharpened edges m of the cutter jaws are forced together and cut off the excess, protruding portion of the rivet. As lever K continues to pivotally move, set screws m approach one another by their engagement with the constantly lessening thickness of cam member N and open up the cutter jaws. The rivet having been cut off and the cutter jaws opened, the continued forward movement of the free end of lever K brings the set 0 into engagement with the end of the rivet, and, as the other end of said rivet is in engagement with the anvil-like end of plunger E, said rivet is upset or headed-over, as will be readily -1nanifest. It will, of course, be understood that the foregoing operations are carried on in a continuous manner and fairly rapidly, so that the set 0 is brought against the end of the rivet with considerable force, to

purpose of securely fastening the frame sections to the body of the handbag or pocketbook.

At the conclusion of the foregoing operations, the operator releases the pressure on the foot-pedal or other actuating means, whereupon a spring Q exerts a downward pull upon the power arm of heading lever K and swings it back into normal, retracted position, carrying therewith hanger L and placing its spring M under tension. Upon the retraction of heading lever K and hanger L, the pocketbook is released andmay be removed from the machine or manipulated into position for receiving the next rivet.

As heretofore stated, the rivets are automatically fed from hopper or magazine D, and, while the feeding or dispensing means may partake of various forms, one form which operates with efficiency is illustrated and will now he described.

The hopper is shown as of inverted, conical shape, and passing through a substantially central aperture in the base thereof is a slidable rod P which extends downwardly through base A of the machine, as shown more particularly in Fig. 2. Vertical, reciprocating movement is imparted to this rod'by a link p pivoted tothe frame, as at p, having a pin and slot connection with rod P. A second link 79 is pivoted at its opposite ends to arm j of the stub shaft and 55 to link 79 intermediate the pivot point 2) thereof and said pin and slot connection with rod P. When arm j is depressed, links and p are similarly moved and rod P is lowered into the dotted line position of Fig. 1. On the other hand, when arm is raised, the operations are reversed and rod P is elevated. A quantity of rivets is adapted to be deposited in hopper D, and the function of rod P is to lift one or more of said rivets at a time and deposit them in a chute or feed slot, from which they may be delivered, one at a time, to the machine. This feed slot is shown in the form of two plates r which are spaced apart just a suflicient distance to allow the shank of a rivet to extend between them, but to maintain the head of the rivet on their upper edges, as shown in Fig. 8. Two upwardly diverging wings r are formed along the portion of the upper edges of plates 4 adjacent rod P so that, as the rivets are lifted by the end of the plunger, they are dumped between wings r and automatically fall down into the position shown in Fig. 8. The

inclination of the upper edge of the plates,

edge of the hopper, whence they pass off the ends of plates 1* and fall into the chute or duct d which leads to the riveting point,

and which has hereinbefore been referred to. satisfactorily manipulate the rivet for the In order, however, that the rivets may be fed one at a time, a stop-gate or step-bystep advancing mechanism is positioned at Y the entrance of duct cl. This stop-gate is .shown in the form of a plate S provided with -a stem 8, which extends through the wall of hopper 1) (see Figs. 1 and 8) and thus pivotally mounts the plate. The outer,

edge of the plate is shaped on the are of a circle, of which the pin .9 is the center, and

- the radius of the plate is such that the lower edge thereof practically touches the upper edges of the rivet-holding plates 1". As shown in Figs. 9, 10 and 11, the lower, curved edge of plate S is provided with a channel which has its entrance 8 at one face of the plate and its outlet 8 at the other face thereof. The inlet to and outlet from the if, from the position plate Sis oscillated in a clockwise of a rivet 00 positioned between plates r, the

rivet will gravitate into the channel. Moreover, if the plate is then rotated in a coun .ter-clockwise direction back to its initial position, the head of the rivet :posite the outlet 8 of. the channel and will gravitate off the ends of plates 9" and fall through the delivery duct 01. The channel is of such'width as to take in but one rivet at a time, so that, when one rivet is in .place, the rotation of the plate to deliver the rivet will bring the inner face of the :plate against the adjacent rivet and hold it back until the first rivet has been dispensed. The foregoing oscillating operations of will be opgate S may be automatically carried out in many ways, such, 6. 9., as by affixing an operating arm t to stem 8 exterior of the hopper and connecting the free end of said arm, by a link T, to one arm of heading lever K, as shown best in Fig. 2. This connection may, of course, be varied, but, when the specific structure described is employed, the movement of heading lever K to headover a rivet will simultaneously shift gate S to a position to receive a subsequent rivet and, when the direction of oscillation of lever K is reversed to return it to its normal position, gate S will be oscillated back into normal position and, just before reaching such normal position, the rivet will be released and will fall through discharge duct cl. The association of the parts is preferably such that, at about the time when the rivet falls through the discharge duct, the low phase '5 of cam I will be beneath roller h so that plunger E will be withdrawn to such extent as to allow the rivet to fall into a position wherein the movement of the parts to their entirely retracted, normal positions will bring the intermediate phase 11 of cam I under roller h and force the rivet forwardly into the position shown in Figs. 1 and 3, which is the initial position hereinbefore described.

It will be manifest from the foregoing description that the machine of this invention operates successively and automatically to position a rivet to be inserted through holes in a bag frame, force the parts of the bag frame tightly together, cut off the rivet, head the same over, and release the frame subsequently to the riveting operation, the parts thereafter withdrawing to a retracted position to allow of the frame being subsequently positioned on the nextrivct. The operations are carried out in rapid sequence and in a thoroughly positive manner. There is no bending or damaging of the rivets or of the bag frame, and the operation of the parts is such as to, in no way whatsoever, subject the operator to injury.

In the foregoing description, the preferred form of the invention has been described, and in this form the machine is operated from any suitable trcadle mechanism. Manifestly, however, the machine may be operated in other Ways and the,

structures of the several mechanisms embodied in the machine may be slightly varied without departing fromv the spirit or scope of this invention, which is to be understood to be as broadly novel as 1s commensurate with the appended claims.

Throughout the foregoing description, the present invention has been eXpla ined as particularly adapted for the riveting together of the frame and body parts of handbags and pocketbooks. It will be understood, however, that the machine of this invention is not limited to this specific use, as it may be employed with great efficiency in the making of satchels, suit cases, and other similar structures. .In fact, it may be applied for operation in the art generally.

In the preferred method of securing handbag, satchel and pocketbook frames to their bodies, small pins or nails, generally escutche-on pins, are employed as rivets, the sharpened ends of these pins being out OK prior to the riveting operation. These pins or nails have been hereinbefore termed rivets, because they are intended for use as such in the present machine. It will be understood, therefore, that the hereinbefore mention of rivets applies to escutcheon pins, nails, pins, and the like, as the particular style of pin or rivet depends entirely upon the character of the work being done.

Irrespective, however, of the type of rivet employed, or the material operated upon, the present invention provides mechanism for placing the pins or rivets in a position to be readily accessible for operation,thereafter cutting off the superfluous length of the rivet, heading-over said rivet, and finally releasing the work from the machine at the culmination of thiscycle of operations. The present invention is, therefore, of marked improvement over such prior art devices as were intended to carry out the riveting operation, only, and dependent on manual manipulation for the carrying out of the other operations in bag construction which the present invention accomplishes in an entirely automatic manner and by a complete cycle of successive mechanical operations.

Having thus fully described the invention, what I claim as new, and desire to secure by Letters Patent, is:

1. In a pinning and riveting machine, the combination of a magazine adapted to receive rivets, means for delivering the rivets singly to the riveting point in the machine, means at the riveting point for holding .a rivet in a position to receive an article to be operated upon, means for forcing the parts of the article together, means for forcing the rivet free from its holding means, means for cutting off the superfluous length of the rivet, and means for clenching or heading said rivet.

2. In a pinning and riveting machine, the combination of a magazine for holding rivets, clamping jaws for holding a rivet to be operated upon, means for delivering the rivets singly from the magazine to the clamping jaws, means for positioning the rivets in the grip of the clamping jaws, means for cutting off the superfluous length of the rivet, and means for heading-over the rivet.

3 In a pinning and riveting machine, the combination of a magazine for holding rivets, clamping aws for holding a rivet to be operated upon, means for delivering the rivets singly from the magazine to the clamping jaws, means for positioning the rivets in the grip of the clamping jaws, means for subsequently forcing said rivet free from the clamping jaws, means for cutting off the superfluous length of the rivet, and means for heading-over the rivet.

4. In a pinning and riveting machine, the combination of a magazine for holding rivets, clamping jaws for holding a rivet at the riveting point in the machine, means for delivering the rivets singly from the magazine to the clamping jaws, a pivoted hanger, a pair of cutter jaws pivoted for movement toward and away from one another and mounted on the hanger, pivotally mounted rivet-heading means, and means mounted adjacent the rivet-heading means and adapted to cooperate with the cutter jaws for actuating the latter.

5. In .a pinning and riveting machine, the combination of a magazine for holding rivets, clamping jaws for holding a rivet at the riveting point in the machine, means for delivering the rivets singly from the magazine to the clamping jaws, a pivoted hanger, a pair of cutter jaws pivoted for movement toward and away from one another and mounted on the hanger, means for normally impelling the cutter jaws to a position to engage a rivet held by the clamping jaws, pivotally mounted rivet heading means, means for positively forcing the rivet-heading means into engagement with a rivet held by the clamping jaws, and means mounted adjacent the rivet-heading means and adapted to cooperate with the cutter jaws for actuating the latter, said pivoted hanger being governed in its movements by the operations of the heading means.

6. In a pinning and riveting machine, the combination of means for forcing a rivet through the work to be operated upon, means for cutting off the superfluous length of the rivet, and means for heading-over the rivet.

7 In a pinning and riveting machine, the combination of a frame, mechanism mounted on the frame for holding a rivet in rigid position, means for forcing the rivet through the work to be operated on, means for cut ting off the superfluous length of the rivet, and means for heading-over the rivet.

8. In a pinning and riveting machine, the combination of a frame, mechanism mounted on the frame for holding a rivet in rigid position, means for forcing the rivet through the work to be operated on, a cutter member 7 pivotally mounted on the frame, means for moving said cutter member to a position to cut off the superfluous length of the rivet, rivet-heading means also pivoted on the frame and movable to a position to headover the rivet, and means cooperating with the heading means whereby the movement of said heading meansinto riveting position automatically actuates the cutter member to cut off the rivet and immediately thereafter removes the cutter member to a position out of the path of the heading means. 7 j

9. In. a pinning and riveting machine, the combination of a frame, mechanism mounted on the frame for holding a rivet in rigid position, means for forcing the rivet through the work to be operated on, a cutter member pivotally mounted on the frame, a spring for moving said cutter member to a position to cut off the superfluous length of the rivet, rivet-heading means also pivoted on the, frame and movable to a position to'headover the rivet, means cooperating with the heading means whereby the movement of said heading means into riveting position automatically actuates the cutter member to cut off the rivet and immediately thereafter removes the cutter member to a position out of the path of the heading means, means for positively moving the heading means toward and away from the riveting point, and con nections between the cutter member and the heading means whereby the pivotal move-- ment of the former is dependent upon the operations of the latter.

10. In a pinning and riveting machine, the combination of means for holding a rivet at the riveting point, a pair of normally open cutter jaws, means for moving the cutter jaws into cooperative relation to the rivet, and pivotally movable means for forcing the cutter jaws together to cut off the rivet to the desired length.

11. In a pinning and riveting machine, the combination of means for holding a rivet at the riveting point, a pair of normally open cutter jaws, means for moving the cutter aws into cooperative relation to the rivet, pivotally movable means for forcing the cutter jaws together to cut off the rivet to the desired length, and means for subsequently heading-over the rivet.

12. In a pinning and riveting machine, the combination of a magazine adapted to contain rivets, a pair of clamping jaws, means for delivering the rivets singly to a position adjacent the clamping jaws, means for forcing a rivet into the grip of the clamping jaws and subsequently forcing it free from the grip of said jaws, and means for heading-over the rivet after the same has been forced free from the grip of the clamping jaws. V

13. In a pinning and riveting machine, the combination of a magazine adapted to contain rivets, a pair of clamping jaws, means for delivering the rivets singly to a position adjacent the clampingjaws, means for forcing a rivet into the grip of the clamping jaws and subsequently forcing it free from the grip of said jaws, means for heading-over the rivet after the same has been forced free from the grip of the clamping jaws, and a cam for operating the rivet forcing means.

1a. In a pinning and riveting machine, the combination of a magazine adapted to contain rivets, a pair of clamping jaws, means for delivering the rivets singly to a position adjacent the clamping jaws, a plunger for forcing a rivet into the grip of the clamping jaws and subsequently forcing it free from the grip of said jaws, means for heading-over the rivet after the same has been forced free from the grip of the clamping jaws, and a cam for actuating said plunger.

15. In a pinning and riveting machine, the combination of a pair of cooperating clamping jaws, a magazine adapted to contain rivets, means for delivering the rivets singly from the magazine to a point adjacent the clamping jaws, a spring-retracted plunger adjacent the clamping jaws, means for imparting step-by-step movement to the plunger against the tension of the spring to force a rivet into the grip of the clamping jaws and subsequently forcing it free from the grip of said jaws, means for cutting off the rivet to proper length, and means for heading-over the rivet after it has been forced free from the clamping jaws.

16. In a pinning and riveting machine, the combination of a magazine for containing rivets, means for delivering said rivets singly to a riveting point, means for holding a rivet at the riveting point in a position to receive the article to be operated on, a pivoted lever, a set mounted on the pivoted lever for clenching the rivet, means for moving the set toward and away from the rivet, a pivoted bracket mounted for concentric movement with the lever, a pair of cutter jaws, a spring for normally main- Gopies of this patent may be obtained for taining the cutter jaws open, means for impelling the bracket into a position wherein the cutter jaws embrace the rivet held at the riveting point, a stop formed on the bracket and cooperating with the lever to render the bracket responsive in its operations to the operations of the lever, and means mounted on the lever and operable upon the cutter jaws, when the same are positioned to operate upon the rivet, to force the jaws together to cut off the rivet to proper length and subsequently open said jaws to allow of the passage therethrough of the set to headover the rivet.

17. A pinning and riveting machine embodying a magazine adapted to contain rivets, clamping jaws, a discharge chute from the magazine, a gate for limiting the passage of rivets through the chute to one at a time, means for conveying the rivets thus discharged to the clamping jaws, means for forcing said rivets into and subsequently out of the grip of the clamping jaws, and means for heading-over or clenching the rivets.

18. A pinning and riveting machine embodying a magazine adapted to contain rivets, a discharge chute from the magazine, means for bringing the rivets in the magazine into position on the chute, a gate for limiting the passage of rivets through the chute to one at a time, clamping jaws, means for conveying the rivets after being discharged through the gate to the clamping jaws, means for forcing said rivets into and subsequently out of the grip of the clamping j aws, means for cutting off the rivets to the desired length, and means for heading-over or clenching the rivets.

In testimony whereof I have signed my name to this specification.

ISAAC BARNETT.

five cents each, by addressing the Commissioner of Patents,

Washington, D. 0. 

